Riain vs Theodor

Riain and Theodorcompared on official birth-registration statistics and Namewise's recorded data. This page states what each name's record shows — it never picks a winner or scores one name against the other.

Head to head

Ranks are only compared within one published list and one year. Two ranks from different years, from a boys' and a girls' list, or from different registrars are not comparable, so they are not placed side by side.

England and Wales · Boys
In 2021, Riain was ranked #3990 and Theodor #514 among boys in England and Wales.
Republic of Ireland · Boys
In 2022, Riain was ranked #779 and Theodor #572 among boys in Republic of Ireland.

Where to go next

Comparisons that share a name, a rule or a published list with this one. Each is an existing comparison page with its own evidence — nothing here says these pairs are alike.

Other comparisons involving Theodor

Pairs where Theodor shares a published list with another name, each measured inside one registrar's own list.

Theodor vs Kristoffer
In Norway · Boys, Theodor moved into the top 50 at #33 in 2010 as Kristoffer fell out of it to #55, having been #34 the year before.
Theodor · Kristoffer · 44 shared years, 1948–2025 · One took the other's place near the top
See the 2010 Norway ranking
Theodor vs Mats
In Norway · Boys, Theodor moved into the top 50 at #37 in 2006 as Mats fell out of it to #59, having been #40 the year before.
Theodor · Mats · 43 shared years, 1978–2025 · One took the other's place near the top
See the 2006 Norway ranking

Side by side

Side-by-side comparison of Riain, Theodor
Field	Riain	Theodor
Record type	Official statistical record (evidence-only)	Editorially researched profile
Gender usage	male	male
Meaning	Not yet recorded	The German form of Theodore, and a Scandinavian, Czech and Romanian variant of Teodor — from Greek 'theos' (god) and 'doron' (gift), 'gift of God'.
Origin	Not yet recorded	Greek roots, transmitted through German and Scandinavian naming traditions as a Teodor variant
Pronunciation	Not yet recorded	/ˈteː.o.doːɐ̯/
Syllables	1	2
Common variants / nicknames	Not yet recorded	Not yet recorded
Recorded regional usage	GB-ENW, GB-NIR, IE	GB-ENW, GB-NIR, GB-SCT, IE, NO
Most recent popularity observation	Republic of Ireland · Boys #779 (2022)	Norway · Boys #11 (2025)
Pronunciation clarity (demonstration score)	Not yet recorded	90/100
Spelling simplicity (demonstration score)	94/100	82/100
International familiarity (demonstration score)	100/100	100/100
Data Confidence	medium	medium

What the data shows

Theodor has a recorded origin (Greek roots, transmitted through German and Scandinavian naming traditions as a Teodor variant); Riain does not have one recorded yet.
Riain has 1 syllable, compared with 2 for Theodor.
A meaning is recorded for Theodor; Riain doesn't have one written yet.
Both names have recorded usage in GB-ENW, GB-NIR, IE.

How each name got here

Riain

Popularity journey

First recorded1994
First recorded at #342 among boys in Republic of Ireland in 1994 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1994–2022
Highest recorded position: #190 among boys in Republic of Ireland, in 2007 (recorded 1994–2022).
Republic of Ireland · Boys
Most recent2022
Most recently recorded at #779 among boys in Republic of Ireland, in 2022.
Republic of Ireland · Boys

Theodor

Popularity journey

First recorded1948
First recorded at #363 among boys in Norway in 1948 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Boys
Highest recorded1948–2025
Highest recorded position: #8 among boys in Norway, in 2024 (recorded 1948–2025).
Norway · Boys
Most recent2025
Most recently recorded at #11 among boys in Norway, in 2025.
Norway · Boys